Results

View the OMRI Generic Materials List Glossary in PDF format here.
Click on the arrow or the material name to view more details about each material.

Compost – windrow (plant and animal materials)

Status:
Allowed

Class:
Crop Fertilizers and Soil Amendments

Origin:
Nonsynthetic

Description:

Plant and animal materials are composted through a process that establishes an initial C:N ratio of between 25:1 and 40:1 and maintains a temperature of between 131°F and 170°F for 15 days, during which period the composting materials must be turned a minimum of five times. Acceptable feedstocks include, but are not limited to, animal manure, by-products of agricultural commodities processing, and source-separated yard debris or "clean green." Compost must not contain more than 1x10³ (1,000) MPN fecal coliform per gram of compost sampled and must not contain more than 3 MPN Salmonella per 4 grams of compost sampled.
See also MICROBIAL PRODUCTS for information on compost starters, other COMPOST listings, SEWAGE SLUDGE, and MUSHROOM COMPOST. See Glossary for definition of "compost."